보리의 로스팅 정도가 보리차의 향 특성에 미치는 영향

The objective of this study was to evaluate the effect of roasting degree of barley on aroma characteristics of boricha (barley tea) using solvent-assisted flavor evaporation-gas chromatography-mass spectrometry and gas chromatography-olfactometry. Fifteen volatile compounds including pyrazine, ethy...

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Published in한국식품과학회지 Vol. 50; no. 2; pp. 123 - 131
Main Authors 정우영(Woo-Young Joung), 김수정(Su-Jeong Kim), 김병구(Byeong-Goo Kim), 허병석(Byung-Serk Hurh), 백형희(Hyung-Hee Baek)
Format Journal Article
LanguageKorean
Published 한국식품과학회 2018
Subjects
Online AccessGet full text
ISSN0367-6293
2383-9635
DOI10.9721/KJFST.2018.50.2.123

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Abstract The objective of this study was to evaluate the effect of roasting degree of barley on aroma characteristics of boricha (barley tea) using solvent-assisted flavor evaporation-gas chromatography-mass spectrometry and gas chromatography-olfactometry. Fifteen volatile compounds including pyrazine, ethylpyrazine, butyrolactone, and guaiacol were considered important volatile compounds, which are generated by roasting barley, because concentrations of those volatiles were significantly increased (p<0.05) as roasting degree of barley was darker. Guaiacol (smoky), furfuryl alcohol (burnt sugar), and furfural (caramel) were detected as aroma-active compounds of boricha with high intensity. Aroma intensity of aroma-active compounds in boricha increased with increase in roasting degree of barley. However, one unknown compound with burnt smell was detected as off-flavor in dark roasted barley. Therefore, it is implied that medium roasting of barley is desirable during boricha manufacturing. Furthermore, boricha manufactured with steamed barley contained more abundant volatile flavor compounds, which may lead to better aroma quality of boricha. 보리의 로스팅 정도가 보리차의 향기성분에 미치는 영향을 알아보기 위하여 생보리와 자숙보리를 로스팅 정도를 다르게 하여 보리차를 제조하고, SAFE를 이용하여 휘발성 성분을 추출한 후 GC-MS와 GC-O로 분석하였다. 생보리와 자숙보리의 휘발성 향기성분은 차이가 없었으나 이를 이용하여 보리차를 제조하였을 때 자숙보리의 휘발성 향기성분이 더 풍부하였다. 로스팅 정도가 강해 질수록 피라진, 에틸피라진, 감마-뷰티로락톤과 과이어콜을 포함한 15종의 화합물의 함량은 통계적으로 유의하게 증가(p<0.05)하여 보리 로스팅 시 생성되는 주요 휘발성 성분으로 생각되며 과이어콜(스모크 향), 푸르푸릴알코올(탄 설탕 향)과 푸르푸랄(캐러멜 향)은 보리차에서 공통적으로 높은 강도로 검출된 향 활성화합물로 보리차의 주요 향 활성 화합물로 생각된다. 보리의 로스팅 정도가 강해질수록 보리차의 휘발성 향기성분은 증가하였지만 강한 정도로 로스팅한 경우, 탄 향을 가진 미지의 화합물이 새로 감지되어 이취로 생각되며 따라서 보리차를 제조할 때에는 중간 정도의 로스팅이 바람직하다고 생각된다.
AbstractList The objective of this study was to evaluate the effect of roasting degree of barley on aroma characteristics of boricha (barley tea) using solvent-assisted flavor evaporation-gas chromatography-mass spectrometry and gas chromatography-olfactometry. Fifteen volatile compounds including pyrazine, ethylpyrazine, butyrolactone, and guaiacol were considered important volatile compounds, which are generated by roasting barley, because concentrations of those volatiles were significantly increased (p<0.05) as roasting degree of barley was darker. Guaiacol (smoky), furfuryl alcohol (burnt sugar), and furfural (caramel) were detected as aroma-active compounds of boricha with high intensity. Aroma intensity of aroma-active compounds in boricha increased with increase in roasting degree of barley. However, one unknown compound with burnt smell was detected as off-flavor in dark roasted barley. Therefore, it is implied that medium roasting of barley is desirable during boricha manufacturing. Furthermore, boricha manufactured with steamed barley contained more abundant volatile flavor compounds, which may lead to better aroma quality of boricha. KCI Citation Count: 1
The objective of this study was to evaluate the effect of roasting degree of barley on aroma characteristics of boricha (barley tea) using solvent-assisted flavor evaporation-gas chromatography-mass spectrometry and gas chromatography-olfactometry. Fifteen volatile compounds including pyrazine, ethylpyrazine, butyrolactone, and guaiacol were considered important volatile compounds, which are generated by roasting barley, because concentrations of those volatiles were significantly increased (p<0.05) as roasting degree of barley was darker. Guaiacol (smoky), furfuryl alcohol (burnt sugar), and furfural (caramel) were detected as aroma-active compounds of boricha with high intensity. Aroma intensity of aroma-active compounds in boricha increased with increase in roasting degree of barley. However, one unknown compound with burnt smell was detected as off-flavor in dark roasted barley. Therefore, it is implied that medium roasting of barley is desirable during boricha manufacturing. Furthermore, boricha manufactured with steamed barley contained more abundant volatile flavor compounds, which may lead to better aroma quality of boricha. 보리의 로스팅 정도가 보리차의 향기성분에 미치는 영향을 알아보기 위하여 생보리와 자숙보리를 로스팅 정도를 다르게 하여 보리차를 제조하고, SAFE를 이용하여 휘발성 성분을 추출한 후 GC-MS와 GC-O로 분석하였다. 생보리와 자숙보리의 휘발성 향기성분은 차이가 없었으나 이를 이용하여 보리차를 제조하였을 때 자숙보리의 휘발성 향기성분이 더 풍부하였다. 로스팅 정도가 강해 질수록 피라진, 에틸피라진, 감마-뷰티로락톤과 과이어콜을 포함한 15종의 화합물의 함량은 통계적으로 유의하게 증가(p<0.05)하여 보리 로스팅 시 생성되는 주요 휘발성 성분으로 생각되며 과이어콜(스모크 향), 푸르푸릴알코올(탄 설탕 향)과 푸르푸랄(캐러멜 향)은 보리차에서 공통적으로 높은 강도로 검출된 향 활성화합물로 보리차의 주요 향 활성 화합물로 생각된다. 보리의 로스팅 정도가 강해질수록 보리차의 휘발성 향기성분은 증가하였지만 강한 정도로 로스팅한 경우, 탄 향을 가진 미지의 화합물이 새로 감지되어 이취로 생각되며 따라서 보리차를 제조할 때에는 중간 정도의 로스팅이 바람직하다고 생각된다.
Author 허병석(Byung-Serk Hurh)
김병구(Byeong-Goo Kim)
백형희(Hyung-Hee Baek)
김수정(Su-Jeong Kim)
정우영(Woo-Young Joung)
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roasting
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Title 보리의 로스팅 정도가 보리차의 향 특성에 미치는 영향
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